35. Mortising for a Blind Tenon

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  • Опубліковано 25 бер 2023
  • How to excavate a mortise for a blind mortise-and-tenon joint.
    Visit www.blackburnbooks.com for books and to sign up for lessons in Woodstock NY.

КОМЕНТАРІ • 84

  • @roberthahn8555
    @roberthahn8555 Рік тому +3

    Hey the sound was much better in this video! Thank you for investing time into improving it! Great video, I learned lots about mortising technique!

    • @gjbmunc
      @gjbmunc  Рік тому

      Glad to hear it!

    • @jimhyslop
      @jimhyslop Рік тому

      @@gjbmunc oh, if we're discussing ways to improve sound - I have noticed that you sometimes accidentally tap your mic with whatever you're holding. You might want to consider getting a foam cover for it, or moving it a few inches up or to the side.

  • @ikust007
    @ikust007 Рік тому +1

    We are extremely lucky to have you sharing your knowledge.

  • @davidcampbell2845
    @davidcampbell2845 Рік тому

    Every episode has a unique and historical gem in addition to the demonstration. Good stuff.

  • @georgegeyer3431
    @georgegeyer3431 4 місяці тому

    You learn something new every day. I have both and just thought they were the same.😊

  • @kentonward97
    @kentonward97 Рік тому +1

    I made the mistake of using regular bench chisels to make mortises, although it can be done you really have to watch what your doing so the chisel doesn’t twist on you !! Glad that now I have mortise chisels. Life is easier with the right tool for the job!

    • @ikust007
      @ikust007 Рік тому

      Same here . Since I switch to Ashley Iles, I love it now.

    • @gjbmunc
      @gjbmunc  Рік тому

      Great point!

  • @riksheline5961
    @riksheline5961 10 місяців тому

    Thanks for you teaching

    • @gjbmunc
      @gjbmunc  10 місяців тому

      It's my pleasure

  • @adriangilbert-rh7nq
    @adriangilbert-rh7nq Рік тому

    Mr Blackburn would have made an excellent teacher.

    • @gjbmunc
      @gjbmunc  Рік тому

      Thank you. I teach regularly at my own shop (see my website) and big schools around the country.

    • @richardcolling8088
      @richardcolling8088 Рік тому

      @@gjbmunc please visit the UK :)

  • @MCsCreations
    @MCsCreations Рік тому

    Thanks a bunch, Graham! 😃
    I still need to buy a chisel like that!
    Stay safe there with your family! 🖖😊

  • @ArchEdge
    @ArchEdge Рік тому

    Thank you Graham - Looks like i've got to add Mortise Chisels to my Wish List.

  • @davida369
    @davida369 Рік тому

    Been waiting for this, thx.

  • @maulstar1
    @maulstar1 7 місяців тому

    These videos are phenomenal! Thank you, sir!

    • @gjbmunc
      @gjbmunc  7 місяців тому

      Glad you like them!

  • @tuffymartinez
    @tuffymartinez Рік тому

    Thank You Graham .... Always enjoyable, informative & I look forward to your next show... TM

    • @gjbmunc
      @gjbmunc  Рік тому

      Glad you enjoyed it

  • @ikust007
    @ikust007 Рік тому

    Thank you !!

  • @johnjackson9601
    @johnjackson9601 Рік тому

    Thank you for the expert information.

    • @gjbmunc
      @gjbmunc  Рік тому +1

      You're very welcome!

  • @SLU94
    @SLU94 11 місяців тому

    Good stuff. Thanks.

    • @gjbmunc
      @gjbmunc  11 місяців тому

      Glad you enjoyed it

  • @athmostafa2462
    @athmostafa2462 Рік тому

    Thanks 👍.

  • @jesusefrenlopezgarcia8596
    @jesusefrenlopezgarcia8596 Рік тому

    Todo lo que buscaba lo encontre en este canal gracias buen hombre

  • @HWCism
    @HWCism Рік тому

    Thanks

    • @gjbmunc
      @gjbmunc  Рік тому

      You're very welcome

  • @dpmeyer4867
    @dpmeyer4867 Рік тому

    thanks

  • @DennisLampret
    @DennisLampret Рік тому

    thank you, wonderful timing! i'm working on an old house which is just getting some new traditional windows next month. the previous owner happened to have all the tools that were used to make the existing ones stored in the attic :) i am wondering how to sharpen the profile shaped irons.

    • @gjbmunc
      @gjbmunc  Рік тому

      A simple trick that often works is - providing the profile of the iron still matches the profile of the sole of the plane - simply to sharpen the BACK of the iron. The cutting edge after all is simply where the two sides of the iron intersect. (This is partly why a,s I mentioned in the episode, why the back of the mortise chisel I used was no longer completely vertical!)

  • @rollingstone3017
    @rollingstone3017 Рік тому

    I really appreciate the no-fuss, non-anal approach here. Makes hand work much more fun really.

  • @1deerndingo
    @1deerndingo Рік тому

    Thank you. I like to watch different people do different ways so as to pick up tricks that suite the individual. I had'nt seen anyone start from the centre before. I makes sense though to protect the ends and may be quicker than starting at one end, gaining depth and then having to work all the way back.. Also, last week you were making a window using the sash plane. How do you remove the sash form in the area where the motise and tenon joint sits? That's what I thought you were going on to this week.

    • @gjbmunc
      @gjbmunc  Рік тому

      It turned out the mortising section was too long so I interposed it between Part One and Part Two of the window-making episode. Next week you'll see the simple jig that is used after mortising to remove the moulded section.

  • @raynierllewis2827
    @raynierllewis2827 Рік тому

    Oh my word this is just what I was looking for.Now where on earth am I going to find a sash plane😢

    • @gjbmunc
      @gjbmunc  Рік тому

      Try eBay and do a Google search. There are also quite a few old tool dealers on line.

  • @thomashverring9484
    @thomashverring9484 Рік тому +2

    Thank you! Very interesting. A mortise chisel is called a "lokbejtel" in Danish. The word means something like a "hole biter/cleaver". I know there are different types, although I'm not entirely sure about the differences.

    • @gjbmunc
      @gjbmunc  Рік тому +1

      Thanks again!

    • @timothymallon
      @timothymallon Рік тому +1

      We also call it a "pig sticker" here in the US.

    • @thomashverring9484
      @thomashverring9484 Рік тому

      @@timothymallon Yes, I wonder if we also have a more "colorful" name for it 😅

    • @jimhyslop
      @jimhyslop Рік тому +1

      I'm not typically one to give my tools names, but I really like "hole biter" so I might just use that!😃

    • @thomashverring9484
      @thomashverring9484 Рік тому +1

      @@jimhyslop Yes, it sounds like something out of Lord of the Rings 😄

  • @robbenton5211
    @robbenton5211 6 місяців тому

    Just found this video and it's almost exactly the technique I use when I chop mortise by hand. I use a homemade guide to keep myself straight. I'm curious how to fix any issues you may have if your mortise winds up crooked.

    • @gjbmunc
      @gjbmunc  6 місяців тому

      Trim the proud side/end and fill the gap.

  • @etymon
    @etymon Рік тому

    Fantastic video, thank you.
    I was wondering if there is any value in using a brace to drill out the bulk of the waste before truing the sides and ends with the chisel?

    • @gjbmunc
      @gjbmunc  Рік тому

      Absolutely, especially if you use a mortising boring jig with a sleeve matching the size mortise chisel and matching tenon.

  • @ianbye4411
    @ianbye4411 Рік тому

    Hi Graham,I wondered how tall your workbench is as it looks just perfect for your work stance.I am currently building a Roubo bench and would love to know, thanks,lovely video and beautiful workshop.

    • @gjbmunc
      @gjbmunc  Рік тому +1

      Stand straight , let your arm hang down and your palm held horizontally should rest on the bench top. This is generally considerd ther best height for planing.

  • @jimrichards7014
    @jimrichards7014 Рік тому +2

    I think I got the mortising technique down, I just don’t quite get how to use the gauge correctly so the mortise is exactly in the centre.

    • @gabrielmaynard
      @gabrielmaynard Рік тому +2

      if the board is 6 squared by a machine check from one face, then reference the other, the nails on the gauge will fall in the same hole. If you're doing a fully traditional style where you only have one reference face and one reference edge you need to measure the edge and find center, measure your chisel and find center on it also, then place the center of the chisel on the center of the edge of the piece and lightly tap it to establish a mortise width, then set the guage to the width of the line you made into the wood.
      You can also measure the width of the edge of the wood and divide that number by 3 to give you the ideal width of the mortise then set your mortise gauge by placing a ruler to the mortise gauge reference face and measuring to the first nail. You set the width of the mortise gauge first in most cases and then set the length of the gauge. To give a simple example I measure a board edge that is 6" wide. I divide that number by 3 which is 2.
      2,4,6.- I place a line on the 2" spot and the 4" spot, this places the ideal mortise width on the piece, I match a mortise chisel close to this width then set my gauge accordingly. If my chisel is smaller than the width of the ideal mortise I simply try to find center by eye or if you are really particular you can measure the distance to find center.
      Once a gauge is set all references must be made by your established edge and face, If you're machining your wood then there's a lot more wiggle room but hand tools require the same reference face and reference edge to ensure accuracy. Also if you are slightly off one side or the other with the mortise hole the piece will be slightly off center when assembled- most cases the now assembled piece can be planed to a new thickness to accommodate both pieces. Hand tool work is a lot of correcting what's there, a machinist woodworker can't make many mistakes with his accuracy but a hand-tool woodworker has a lot more freedom to correct their errors and finish the piece. Remember the best furniture was made in a time people used wooden reference squares and sighted "flat" by eye. There was none of these machinist straight edges and fancy tools for your average carpenter 400 years ago and they still created brilliant pieces.
      Hope this helped, I do this stuff for a living so I like to share when I can.

    • @gjbmunc
      @gjbmunc  Рік тому +2

      Gabriel, thank you for your explanation, and of course your system works in many cases, but apart from the fact that the mortise (and tenon) are not always required exactly in the center of the workpiece, I find it generally easier to cut the tenon first and then use it to lay out and position the mortise by laying one on top of the other laterally and transversely. That way I don't have to actually bother with measurements.

  • @ikust007
    @ikust007 Рік тому

    Sir . Can we say that the Ashley Iles are register chisels (oval handle). I did try to make my mortises like Mr.Sellers with a normal chisels : never had great succès. But with the Iles … wow!

    • @gjbmunc
      @gjbmunc  Рік тому

      As I mentioned, it's mainly a question of size.

    • @ricos1497
      @ricos1497 Рік тому

      Ashley Isles make all sorts of chisels. I have a set of their bevelled chisels, they're great. I got them as a gift, they're not really worth the extra outlay if I'm honest, but they look and feel nice! I don't have any mortice chisels, but I may get some now just to see the difference. I'm off to ebay!

  • @pettere8429
    @pettere8429 Рік тому

    Would it not be easier to get the piece with the tenon in the right place if you start by cutting the tenon?

    • @gjbmunc
      @gjbmunc  Рік тому +1

      Most of the time I do indeed start by cutting the tenon in order to use the tenone to mark out where the mortise will go.

  • @Jimbo878
    @Jimbo878 Рік тому +1

    Mortise first then Tenon, I've struggled with this for too long, how do the "owl hands" approach this Graham?

    • @1deerndingo
      @1deerndingo Рік тому

      Mortise first and make the tenon to fit the mortise.

    • @gjbmunc
      @gjbmunc  Рік тому +1

      Whatever works (in different situations), but I usually find it easier to make the tenon first and then use it to define the mortise.

  • @ikust007
    @ikust007 Рік тому

    Never saw such a tenon marker ?!

    • @russellterry8671
      @russellterry8671 Рік тому

      You can still purchase them new and can find them second hand as well. Not that uncommon. I have three old ones of different styles, mainly because they are beautiful looking and feeling.

    • @gjbmunc
      @gjbmunc  Рік тому

      Totally agree!

  • @georgegeyer3431
    @georgegeyer3431 4 місяці тому

    When do you remove the waste?

    • @gjbmunc
      @gjbmunc  4 місяці тому +1

      As I go along.

  • @mikejustice1196
    @mikejustice1196 Місяць тому

    At :46 in the beginning of this video… what kind of folding ruler is that on your work bench?
    Name of it please.
    I’ve seen boatwrites use them too.
    Thanks

    • @gjbmunc
      @gjbmunc  Місяць тому

      It's a four-fold, two foot rule by Stanley (from a long time ago)

  • @darrenwheatley4677
    @darrenwheatley4677 Місяць тому

    I’ve always been told the big chisels are “pig stickers”? Is that a local UK name?

    • @gjbmunc
      @gjbmunc  Місяць тому

      Never heard it myself.

  • @vosifle
    @vosifle Рік тому +1

    The excavation of the waste isn't shown. That's one of the trickiest parts so not to damage the edges. Why not really showing it?

    • @gjbmunc
      @gjbmunc  Рік тому +1

      You are correct: excavating the mortise can easily damage the ends ( not the edges, as you mentioned), which is why I stressed not chiseling up the ends until the correct depth has been reached, that way any damage as you pry out the waste does not impact the very ends.